/***************************************************************************
 *  Original Diku Mud copyright (C) 1990, 1991 by Sebastian Hammer,	   *
 *  Michael Seifert, Hans Henrik St{rfeldt, Tom Madsen, and Katja Nyboe.   *
 *									   *
 *  Merc Diku Mud improvments copyright (C) 1992, 1993 by Michael	   *
 *  Chastain, Michael Quan, and Mitchell Tse.				   *
 *									   *
 *  In order to use any part of this Merc Diku Mud, you must comply with   *
 *  both the original Diku license in 'license.doc' as well the Merc	   *
 *  license in 'license.txt'.  In particular, you may not remove either of *
 *  these copyright notices.						   *
 *									   *
 *  Much time and thought has gone into this software and you are	   *
 *  benefitting.  We hope that you share your changes too.  What goes	   *
 *  around, comes around.						   *
 ***************************************************************************/

/***************************************************************************
*	ROM 2.4 is copyright 1993-1995 Russ Taylor			   *
*	ROM has been brought to you by the ROM consortium		   *
*	    Russ Taylor (rtaylor@pacinfo.com)				   *
*	    Gabrielle Taylor (gtaylor@pacinfo.com)			   *
*	    Brian Moore (rom@rom.efn.org)				   *
*	By using this code, you have agreed to follow the terms of the	   *
*	ROM license, in the file Rom24/doc/rom.license			   *
***************************************************************************/

/*************************************************************************** 
*       ROT 1.4 is copyright 1996-1997 by Russ Walsh                       * 
*       By using this code, you have agreed to follow the terms of the     * 
*       ROT license, in the file doc/rot.license                           * 
***************************************************************************/
/*
 * Copyright (C) 2007-2011 See the AUTHORS.BlinkenMUD file for details
 * By using this code, you have agreed to follow the terms of the   
 * ROT license, in the file doc/rot.license        
*/

#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <time.h>
#include "merc.h"

/* does aliasing and other fun stuff */
void
substitute_alias (DESCRIPTOR_DATA * d, char *argument)
{
  CHAR_DATA *ch;
  char buf[MAX_STRING_LENGTH], prefix[MAX_INPUT_LENGTH],
    name[MAX_INPUT_LENGTH];
  char *point;
  int alias;

  ch = d->original ? d->original : d->character;

  smash_tilde (argument);

  /* check for prefix */
  if (ch->prefix[0] != '\0' && str_prefix ("prefix", argument))
    {
      if (strlen (ch->prefix) + strlen (argument) > MAX_INPUT_LENGTH)
	send_to_char ("Line to long, prefix not processed.\r\n", ch);
      else
	{
	  sprintf (prefix, "%s %s", ch->prefix, argument);
	  argument = prefix;
	}
    }

  if (IS_NPC (ch) || ch->pcdata->alias[0] == NULL
      || !str_prefix ("alias", argument) || !str_prefix ("una", argument)
      || !str_prefix ("prefix", argument))
    {
      interpret (d->character, argument);
      return;
    }

  strcpy (buf, argument);

  for (alias = 0; alias < MAX_ALIAS; alias++)	/* go through the aliases */
    {
      if (ch->pcdata->alias[alias] == NULL)
	break;

      if (!str_prefix (ch->pcdata->alias[alias], argument))
	{
	  point = one_argument (argument, name);
	  if (!strcmp (ch->pcdata->alias[alias], name))
	    {
	      buf[0] = '\0';
	      strcat (buf, ch->pcdata->alias_sub[alias]);
	      strcat (buf, " ");
	      strcat (buf, point);
	      break;
	    }
	  if (strlen (buf) > MAX_INPUT_LENGTH)
	    {
	      send_to_char ("Alias substitution too long. Truncated.\r\n",
			    ch);
	      buf[MAX_INPUT_LENGTH - 1] = '\0';
	    }
	}
    }
  interpret (d->character, buf);
}

void
do_alia (CHAR_DATA * ch, char *argument)
{
  send_to_char ("I'm sorry, alias must be entered in full.\n\r", ch);
  return;
}

void
do_alias (CHAR_DATA * ch, char *argument)
{
  CHAR_DATA *rch;
  char arg[MAX_INPUT_LENGTH], buf[MAX_STRING_LENGTH];
  int pos;

  if (ch->desc == NULL)
    rch = ch;
  else
    rch = ch->desc->original ? ch->desc->original : ch;

  if (IS_NPC (rch))
    return;

  smash_tilde (argument);

  argument = one_argument (argument, arg);


  if (arg[0] == '\0')
    {

      if (rch->pcdata->alias[0] == NULL)
	{
	  send_to_char ("You have no aliases defined.\n\r", ch);
	  return;
	}
      send_to_char ("Your current aliases are:\n\r", ch);

      for (pos = 0; pos < MAX_ALIAS; pos++)
	{
	  if (rch->pcdata->alias[pos] == NULL
	      || rch->pcdata->alias_sub[pos] == NULL)
	    break;

	  sprintf (buf, "    %s:  %s\n\r", rch->pcdata->alias[pos],
		   rch->pcdata->alias_sub[pos]);
	  send_to_char (buf, ch);
	}
      return;
    }

  if (!str_prefix ("una", arg) || !str_cmp ("alias", arg))
    {
      send_to_char ("Sorry, that word is reserved.\n\r", ch);
      return;
    }

  if (argument[0] == '\0')
    {
      for (pos = 0; pos < MAX_ALIAS; pos++)
	{
	  if (rch->pcdata->alias[pos] == NULL
	      || rch->pcdata->alias_sub[pos] == NULL)
	    break;

	  if (!str_cmp (arg, rch->pcdata->alias[pos]))
	    {
	      sprintf (buf, "%s aliases to '%s'.\n\r",
		       rch->pcdata->alias[pos], rch->pcdata->alias_sub[pos]);
	      send_to_char (buf, ch);
	      return;
	    }
	}

      send_to_char ("That alias is not defined.\n\r", ch);
      return;
    }

  if (!str_prefix (argument, "delete") || !str_prefix (argument, "prefix"))
    {
      send_to_char ("That shall not be done!\n\r", ch);
      return;
    }

  for (pos = 0; pos < MAX_ALIAS; pos++)
    {
      if (rch->pcdata->alias[pos] == NULL)
	break;

      if (!str_cmp (arg, rch->pcdata->alias[pos]))	/* redefine an alias */
	{
	  free_string (rch->pcdata->alias_sub[pos]);
	  rch->pcdata->alias_sub[pos] = str_dup (argument);
	  sprintf (buf, "%s is now realiased to '%s'.\n\r", arg, argument);
	  send_to_char (buf, ch);
	  return;
	}
    }

  if (pos >= MAX_ALIAS)
    {
      send_to_char ("Sorry, you have reached the alias limit.\n\r", ch);
      return;
    }

  /* make a new alias */
  rch->pcdata->alias[pos] = str_dup (arg);
  rch->pcdata->alias_sub[pos] = str_dup (argument);
  sprintf (buf, "%s is now aliased to '%s'.\n\r", arg, argument);
  send_to_char (buf, ch);
}


void
do_unalias (CHAR_DATA * ch, char *argument)
{
  CHAR_DATA *rch;
  char arg[MAX_INPUT_LENGTH];
  int pos;
  bool found = FALSE;

  if (ch->desc == NULL)
    rch = ch;
  else
    rch = ch->desc->original ? ch->desc->original : ch;

  if (IS_NPC (rch))
    return;

  argument = one_argument (argument, arg);

  if (arg == '\0')
    {
      send_to_char ("Unalias what?\n\r", ch);
      return;
    }

  for (pos = 0; pos < MAX_ALIAS; pos++)
    {
      if (rch->pcdata->alias[pos] == NULL)
	break;

      if (found)
	{
	  rch->pcdata->alias[pos - 1] = rch->pcdata->alias[pos];
	  rch->pcdata->alias_sub[pos - 1] = rch->pcdata->alias_sub[pos];
	  rch->pcdata->alias[pos] = NULL;
	  rch->pcdata->alias_sub[pos] = NULL;
	  continue;
	}

      if (!strcmp (arg, rch->pcdata->alias[pos]))
	{
	  send_to_char ("Alias removed.\n\r", ch);
	  free_string (rch->pcdata->alias[pos]);
	  free_string (rch->pcdata->alias_sub[pos]);
	  rch->pcdata->alias[pos] = NULL;
	  rch->pcdata->alias_sub[pos] = NULL;
	  found = TRUE;
	}
    }

  if (!found)
    send_to_char ("No alias of that name to remove.\n\r", ch);
}
